What are the top 3 of yellow gemstones ?

• Beryl, Amber, Chrysoberyl

• Diamond, Imperial Topaz, Citrine

• Diamond, Sapphire, Imperial Topaz

• Saphhire, Imperial Topaz, Citrine

Gemologists assess color by considering hue, tone and saturation. For yellow gemstones, the primary hue is actually white or colorless then followed by yellow color.

• True

• False

For yellow hues, as saturation increases in light-toned gems, the designation goes from fancy light to fancy, fancy intense, and _________

The reasons that influence the price of Fancy Yellow Diamond...

• Color grade

• The 4C's

• High Carat Weights

• All above answer

The low iron content in Corundum is responsible for the color of yellow sapphire and sometimes called Golden Sapphire if there is an intense color.

• True

• False

Yellow sapphires can range in color from greenish yellow to ______ -yellow and everything in between.

What are the factors will cause the price and value of Yellow Sapphire ?

• Size

• Quality

• Treatment

• All above answer

Most yellow sapphires have been heat-treated to improve color and clarity. Besides, many yellow sapphires on the market have been treated with beryllium, in a process known as lattice diffusion. What color will they produce from this process ?

• Green and Brown

• Yellows and Live Oranges

• Yellow and Green

• Pale yellow and Intense Yellow

Imperial Topaz is highly prized and very rare. There are three other names for this precious stones; Imperial Topaz, King Topaz and .....

• Empress Topaz

• Silver Topaz

• Gold Topaz

• Golden Topaz

The Imperial Topaz stones come in a variety of shades, ranging from light yellow to a deep golden orange hue. But the richest and most sought-after color is the imperial topaz with its beautiful ________ hues.